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Old 19-08-2014, 14:14   #1
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Question Identifying the Decompression Lever

Just now learning about the Yanmar 2GM20F engine that came with my boat. In blogs about air bleeding fuel lines, esp. when hand-cranking, there are references to "decompression levers". Would someone please help me locate and identify those levers?, and perhaps show which are the "open" and "closed" positions? Thanks.
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Old 19-08-2014, 14:38   #2
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Re: Identifying the Decompression Lever

They are on top by the valve cover, they may be linked together mine were.
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Old 19-08-2014, 14:45   #3
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Re: Identifying the Decompression Lever

Yes on top of, well on the side of the valve cover. Closed (running) is toward the front/fanbelt water pump side, open (stopped/ not running) is toward the exhaust side.
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Old 19-08-2014, 14:48   #4
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Re: Identifying the Decompression Lever

Better job explaining sailorchic, oh and Google images is a good place to look.
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Old 19-08-2014, 16:08   #5
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Identifying the Decompression Lever

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Old 19-08-2014, 16:12   #6
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Re: Identifying the Decompression Lever

Ps ..... I doubt it you will crank it under compression ( with the levers in to wrong position for starting)


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